Answer: A) 0.18 cm²
Step-by-step explanation:
To calculate the area of a parallelogram you must apply the formula shown below:
Where b is the base and h is the height of the parallelogram.
You know the values of the base and the value of the height.
Therefore, when you susbstitute these values into the equation shown above, you obtain the following result:
Answer:
<em>Area of polygon D = 10 square units</em>
Step-by-step explanation:
<u>Given:</u>
Polygon <em>C </em>has an area of 40 square units.
It is scaled with a scale factor of to form a new polygon D.
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<u>To find:</u>
The area of polygon D = ?
<u>Solution:</u>
When any polygon is scaled to half, then all the sides of new polygon are half of the original polygon.
And the area becomes one-fourth of the original polygon.
Let us consider this by taking examples:
Area of a right angled triangle is given by:
If scaled with a factor , the sides will be 3, 4 and 5.
New area, A':
i.e. Area becomes one fourth.
Sides be 8 and 10 units.
Area of a rectangle, A = = 8
10 = 80 sq units.
Now after scaling, the sides will be 4 and 5 units.
New Area, A' = 4 5 =20 sq units
So,
Now, we can apply the same in the given question.
Area of polygon D =
Area of polygon C
Area of polygon D = 40 = <em>10 sq units</em>